Area of the wheat tan spot (yellow spot) .

Object description Download GIS-layers


Specialist-biologist-L.A. Mikhailova, GIS-specialist-M.I. Saulich.

Date of creation:




Accuracy of map:

Map was created based on materials of maps of natural scale 1:40 000.000.


"Alber's Equal Area Conic", 9, 1001, 1, 100, 0, 44, 68, 0, 0.

Basic contents:

Vector map. Area of species distribution and zones of disease severity are shown by polygons.

Accuracy of classifier:

Zones of strong and weak harm are based on frequency of disease occurence. In zone of strong harm, disease reported to develop 3-4 years per decade, in zone of weak harm, disease develops less often.

Method of map production:

Scientists were given maps with boundaries of Oblasts and arable lands. After reviewing historic literature, species distribution was hand drawn on maps. If data were on the Oblast-level, distribution is on the Oblast level. In some cases, Oblast.s are further refined by boundaries of the Arable Land Map (Koroljeva et al., 2003). Hand drawn maps were scanned, georeferenced and vectorized. Information regarding the life cycle of the pathogen and the host-plants was acquired from the following sources: Ciufetti (1999), Khasanov (1988), Pospekhov (1989), Mikhailova (2000). The zones of disease harmfulness were determined according to the following sources: Novozhilov & Zakharenko (2000), Sanin et al. (2002) and Andronova (2001).

Reference citations:

Andronova A.E. 2001. Tan spot of winter wheat in South-West Russia. Zashchita i karantin rastenii, 5: 32. (In Russian)
Ciuffetti L.M., Tuori R.P. 1999. Advances in the characterization of Pyrenophora tritici-repentis.wheat interaction. Phytopathology, 89(6): 444-449.
Khasanov B.A. 1988. Yellow leaf spot in cereals, caused by Pyrenophora tritici-repentis (Died.) Drechs. Mikologiya i Fitopatologiya, 22(1): 78-83. (In Russian)
Koroljeva IE, Vilchevskaya EV, Ruhovich DI. 2003. Digital Arable Land Map. Laboratory of Soil Information of the Dokuchaev Soil Institute, Moscow, Russia [Based on: Yanvareva LF. (ed.), Martynjuk KN., Kisileva NM. 1989. Map of Land Use, Faculty of Geography, Moscow State University, Moscow, Russia.].
Mikhailova L. 2000. Yellow leaf spot of wheat . Pyrenophora tritici-repentis. Mikologiya i Fitopatologiya, 34(1): 7-16. (In Russian)
Novozhilov K.V., Zakharenko V.A., eds. 2000. Levels and tendencies of variability of species composition and intrapopulation structure, areas of complexes of harmful and useful organisms and forecast of dangerous phytosanitary situations on zones of the country. St. Petersburg: RASKhN. 100 p. (In Russian)
Pospekhov G.V. 1989. The growth and fruiting of Pyrenophora tritici-repentis (Died.) Drechs. in culture. Mikologiya i Fitopathologiya, 23(2): 117-121. (In Russian)
Sanin S.S., Cherkashin V.I., Nazarova L.N., Sokolova E.A., Strizhekozin Yu.A., Ibragimov T.Z, Neklesa N.P. 2002. Phytosanitary examination of cereals: Recommendations. Moscow: Rosinformagrotech. 140 p. (In Russian)

Right and copyright:

All rights reserved. Copyright 2003 © L.A. Mikhailova & M.I. Saulich (vector map, description) and L.A. Mikhailova (picture).

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